STRUCT SND_FIREWIRE_MOTU_REGISTER_DSP_METER(9)

🎀 struct snd_firewire_motu_register_dsp_meter(9) 🎀

okay bestie, so this is a page straight out of the Kernel API Manual, and it's about one very specific little struct. ngl, it's niche, but it's iconic in its own way. Let's get into it 💅

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✨ NAME ✨

struct snd_firewire_motu_register_dsp_meter — literally just the container for meter information in the DSP that's controlled by register access 🎚️

🦋 SYNOPSIS 🦋

struct snd_firewire_motu_register_dsp_meter {
    __u8 data[SNDRV_FIREWIRE_MOTU_REGISTER_DSP_METER_COUNT];
};

that's the whole thing. she's compact. she's efficient. she's main character energy in array form ✨

🌸 Members 🌸

• data — the signal level meters, bestie! 💖 the mapping between position and input/output channel is model-dependent, so don't come for me if your box maps them differently, ok? every model does its own thing 🙈

💜 Description 💜

so this structure is out here expressing the part of DSP status that's all about the hardware meter 🎚️✨ that's its whole job, and it ate.

the u8 storage includes a linear value for the audio signal level, and that value lives between 0x00 and 0x7f. that's the range. periodt. 🔥

lowkey important: it's a linear value in that range, and it's stored as __u8 — no fancy conversion, no extra layers, just the raw vibes of your signal level 💀

🌈 SEE ALSO 🌈

• Kernel file ./include/uapi/sound/firewire.h struct snd_firewire_event_ff400_message(9)
• struct snd_firewire_motu_register_dsp_parameter(9)
• struct snd_firewire_motu_command_dsp_meter(9)

go read those too, iykyk 🫶

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okay that's the whole page, bestie! this one came from ./include/uapi/sound and it's dated October 2026 — so yeah, mark your calendar, screenshot it, whatever you gotta do 📸💖 slay, bye! 🧚✨